Can end.



W. AYRES.

CAN END.

APPLlCATlON min JULY 29, I912.

1 ,13%993 Patented Apr. 27, 1915.

arena snares .AUTENT enrich.

. .w I I p I WILLIAM AYRES, F MOUNT HAMILTON, ONTARIO, CANADA, ASSIG-NOBJ T0 AMERICAN CAN COMPANY,'OF NEW YORK, N.-Y., A CORPORATION OF NEW JERSEY.

can END.

mantras Specification of Letters Patent.

Patented a nea, ieit.

Application filed 11115 29, 1912. Serial no. 711,967.

To all 'w/mmz't may concern: Be it known that I, WILLIAM AYRES, a cltiz'en of Canada, residlng in 'Mount Hamthe following is a specification.

This invention relatesto improvements in sheet metal can ends more especially adapted for use means or vessels having paperor fiber sides or walls, and the invention consists in providing the sheet metal, countersunk can end with means for preventing a stack of the'can ends from nesting together, and which same means, when the end is clamped on theyielding can-body,

will prevent the end from turning upon the body.

In the drawing which forms a part of} this. specification, Figure 1 a vertical sec- 7 tion of a can employing theimproved' ends.

Fig. 2. is a horizontal section of the can end and can body-on the line 2'-2 of Fig. l.'

Fig. 3 is a plan view of the improved can end, the same being shown as in a can end stack, and Fig. 4 is.a vertical, sectionalview of such a stack of canends as is represented in Fig. 3. Q I

In securing or crimping sheet metal can ends to paper bodies, it is usual and thought. :to bethe best practice to form the can end with a countersunk portion snugly fitting inside of the paper'body, and with a hori-' zontal flange extending slightly beyondthe outsideof .said'body. In securing such an end to the body, it is better' practice to curl, this flange all around into strong contact with the paper wall, inakinga tight joint. This joint has thesingle defect, however, that the can end, being circular, canbe turned upon the body, as, for example, in opening a screw nozzle or in handling the can, and, I especially where screw caps or nozzles are employed in the outfit or vessel, such slight freedomto turn is a marked; disadvantage and may result in the creation of leaks or loosening of the joint. Another difliculty encountered in the manufacture of cans of this character, is the liability of the can ends, when stacked up;-ina pile,

to nest together, rendering the operation of feeding the can ends difiicult. f

"In the present invention, I propose to overcome all of these difliculties by the sim- -stacked up, the chance of their nestin gether, (whichcould only take place it the- 1 downwardly along the said fitting countersunk portion of the can end. 9

When the can ends so constructed are bulges of one can,'coincide with those of the ad acent one), are so small as to be negligible. iAndwhen sucha can end is crimped upon the yielding paper body, these bulges cause a smalldistortion of the body; out of atr'ue circle, so that the can end cannotbe turned upon the body after the joint is formed.

In" the accompanying drawing, A is a sheet metal can end having the vertical countersunk wall aand made with the horizontally extending flange a adapted tobe curled inwardly against the paper can body,

B by any suitable crimping. die or roller Il'lilChlIlG suclr as are well, known in the art.

The vertical wall a is madewith bulges c which are not great enough in extent to interfere with the insertion-of the countersunk portion of the can end into the body. After thecan end and body are brought together,- the flange'is crimped inwardlyi into contact with the yieldingsubstance of the body, and these bulges 0 cause a harder gripping action between the end of-the body at that point which renders it impossible to-subsequently turn the end upon the body. .At Figs. 3 and 4, a stack of the can ends is shown ;as though in the stack guides D to illustrate the nesting preventive action of the bulges whe'nthe can ends are stacked.

This simple expedient adds practically nothing to the cost of the can end in its manufacture and yet accomplishes, as above stated, several valuable results.

I clalmzv ,1. A can end having a laterally extending flange and a countersunk central por- .tion,, theverticalwall of the countersunk outwardly upwardly and portion beingformed with bulged portions extending.

vertical walls, whereby the nesting of the can end is pre-' ventedawhen it is stacked with others of a simila structure, substantially'as specified. 2. A sheet m etal can end having a latorally extending bircumferential and count6I'SL1I1k central portion, the vertical wall similar structure when stacked, substanof {118,00111'1331811i1k portifin being figmed tially as specified. witi outwar -u ges at t reeeircum eren- I tial equally spaced points, the said bulges WILLIA-MQAYRES' 5 extending upwardly and downwardly along Witnesses:

the said Vertical wall, the bulges preventing K. BETHUNE, the can end from nesting with others of a PANSY DICKSON. 

